New changelog entries:
* debian/patches/open-readonly.patch:
- Generally we don't need to write to every single block device we open,
in fact if we do that when scanning we'll make udev think they all
changed, and it could run "lvm vgscan" again! When the file descriptor
is needed for writing, it will be closed and opened again. LP: #332270.

New changelog entries:
* Update udev rules.d path to /lib/udev/rules.d, (LP #314879) and add
versioned dependency on udev accordingly.
* Add versioned breaks on udev to make sure we do the upgrade
in the correct order.
* Add versioned dependency on watershed version that installs
into initramfs.